Valve core remover



March 11, 1947.

A. HEINTZELMAN vAvLE .CORE REMVER Filed May 22, 1945 I m/entor .leo

Patented Mar. 11,1947

VALVE CORE REMOVER Y Leo A. Heintzelman, Grand Rapids, Mich. Application May 22, 1945, serial No. 595,992

Y 2 Claims. v 1

When it becomes necessary to repair the inner tube of a pneumatic vehicle wheel tire, it is the usual practice to quickly deflate vthe inner tube by removing the core or check valve assembly from the casing or stem of the ination valve of the inner tube. The primary object of the present A more specific object i the present invention is to provide a tool of the above kind which will aord a symmetrical and compact unit which may be conveniently carried in Vand clipped to the pocket of a garment when not in use.

A further object 2 of the stem 5 of `they inflation valve or into the same.

The present invention contemplates the provision of an improved tool for readily and eXpeditiously removing the assembly 8 from the stem when 1t is desired to quickly deiiate the inner tube provided with the inflation valve. As shown,

the present tool includes an elongated tubular f barrel I 0 having an axial bore provided withL threads at II corresponding to the internal threads at 1 in thestem 5 of the iniiation valve. The lower end of the barrel ld is counterbored and internally threaded, as at. l2, so as to be removably screwed upon the reduced end i; oi

the stern 5 when the therefrom.

The tool further includes an elongated externally knurled handle I 3 usual valve cap is removed provided with a kerf I6 and has an axial socket I6 adapted for snug reception of the check valve stem 9 of the assembly 8. When the stem 9 is engaged in socket IG, a driving connection is provided between said stem 9 and the stem I 4 of the tool by the usual wings of stem 9 engaged in the kerf I6.

In use, the barrel I6 is threaded upwardly on stem I4 until it engages the handle I3, at which time the lower end I5 of stern i4 projects below end portion I5 is inserted in ofi of the latter, the assembly A8 being retained in the barrel i0 so that it will not become readily misplaced or the assembly 8 may be threaded out of the lower end of barrel I into the hand or back into the stem 5.

The barrel I I) is preferably provided through one side and directly above the counterbore I2 with a transverse vent opening I'I so that air may escape from the ination valve as soon as the assembly 8 is threaded into the bore II of barrel I above said vent opening I'I. Of course, when the barrel II! is threaded oi of the stem 5, the air will be allowed to more rapidly escape from the inner tube.

When the tool is not in use, the barrel I0 is, preferably -threaded upwardly on stem I4 into contact with the 'lower end of handle I3. At this time, the reduced lower end I5 of stem I4 projects below the barrel I and is encased by a removable cap I8 having a threaded stem I9 adapted to screw into the counterbore I2 of the barrel I0. The body portion of cap I8 is ofthe same diameter as barrel I9 so that whenY the parts are assembled, as shown in Figure 1, they provide an elongated or slender' assembly of uniform. diameter from end to end thatY may be readily carried in the pocket of a garment. spring clip 20 may be provided on the handle I3 for engagement with the pocket so as to retain the tool in the latter in a manner similar to thatV in which fountain pens and the like are commonly retained in garment pockets. The adjacent ends of the cap I8, barrel Iand handle I3 flatly abut each other so as to present a continuous smooth surface when the device is assembled, as shown in Figure 1.

From the foregoing descriptiomit is believed` that the construction, manner of use and advantages of the present invention will be readily understood and appreciated by those skilled in the art.

What I claim is:

l. A tool for removing, from the casing of an inflation valve, a check valve assembly removably threaded into said casing, including an elongated barrel having an axial bore whose wall is threaded to correspond to the thread in the casing engaged by said assembly, said'barrel further having a counterbore at its Vlower end whose wall is threaded to screw onto the upper end of the casing,V an elongated handle, an elongated axial A suitableV Y handle yand to project the lower end of the stemk the handle and threaded stem on the lower end of the handle having adjustable threaded engagement in the bore of the barrel and provided with a reduced lower end portion adapted to freely enter the ycasing and formed with a'kerf for driving engagement with the check valve stem of the assembly, said threaded stem being longer than the barrel so that its reduced end portion will pro-Y ject below the barrel for engagement with the check valve stem when theibarr'el is adjusted toward the handle, said barrel being adjustable partially off of the threaded stern for threading onto the casing so as to maintain the threaded stemin engagement with the check valverstem while screwing the assembly out of the casing by turning the handle.

2. The construction defined in barrel are'o diameterr and wherein the barrel is adjustable onto the stem to such an extent as to engage the upper end of said barrel with the lower end of the claim 1, wherein below the lower end of the barrel, and a removable cap for enclosingy the lower end of the threaded stem when projected below the lower end of the barrel, said cap external diameter as the barrel and including a threaded neck detaehably Vscrewed into the counterbore of the barrel.

LEO A. HEINTZELMAN. Y REFERENCES" CITED The following references are of record the le of this patent: v Y v UNITED STATESPATENTS 'Number Y Name Date. Y Y Y 1,091,839 Havereld Mar. 31, 1914 2,026,926 Williams Jang?, k1936 1,995,419 Gerard Apr, 17, 1934 k2,110,999 Miga Mar. 15, 1938 t 2,054,138 Sandell similar external being'of the same Y sept. 15, 193e. 

